package com.sky.service.impl;


import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.vo.OrderReportVO;
import com.sky.vo.SalesTop10ReportVO;
import com.sky.vo.TurnoverReportVO;
import com.sky.vo.UserReportVO;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class ReprotServiceImpl implements ReportService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private UserMapper userMapper;
    @Override
    public TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList=new ArrayList<>();
        dateList.add(begin);
        while(!begin.equals(end)){
            //日期计算，计算指定日期后一天的对应的日期
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        //存放每天的营业额
        List<Double> turnoverList=new ArrayList<>();
        for(LocalDate date:dateList){
            LocalDateTime beginTime=LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(date,LocalTime.MAX);
            Map map=new HashMap();
            map.put("begin",beginTime);
            map.put("end",endTime);
            map.put("status", Orders.COMPLETED);
            Double turnover=orderMapper.sumByMap(map);
            turnover=turnover==null?0.0:turnover;
            turnoverList.add(turnover);
        }
        return TurnoverReportVO.builder()
                .dateList(StringUtils.join(dateList,","))//StringUtils导apche的包
                .turnoverList(StringUtils.join(turnoverList,","))
                .build();
    }

    /*
    * 用户统计
    * */
    @Override
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList=new ArrayList<>();
        dateList.add(begin);
        while(!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        List<Integer>newUserList=new ArrayList<>();
        List<Integer>totalUserList=new ArrayList<>();
        for(LocalDate date :dateList){
            LocalDateTime beginTime=LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(date,LocalTime.MAX);
            Map map=new HashMap();
            map.put("end",endTime);
            Integer totalUser=userMapper.countByMap(map);
            map.put("begin",beginTime);
            Integer newUser=userMapper.countByMap(map);
            totalUserList.add(totalUser);
            newUserList.add(newUser);

        }
        return UserReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .totalUserList(StringUtils.join(totalUserList,","))
                .newUserList(StringUtils.join(newUserList,","))
                .build();
    }

    @Override
    public OrderReportVO getOrdersStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList=new ArrayList<>();
        dateList.add(begin);
        while(!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        List<Integer>orderCountList=new ArrayList<>();
        List<Integer>validOrderCountList=new ArrayList<>();
        for(LocalDate date :dateList){
            LocalDateTime beginTime=LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(date,LocalTime.MAX);
            Integer orderCount=getOrdersCount(beginTime,endTime,null);
            Integer validOrderCount=getOrdersCount(beginTime,endTime,Orders.COMPLETED);
            orderCountList.add(orderCount);
            validOrderCountList.add(validOrderCount);
        }
        Integer totalOrderCount=orderCountList.stream().reduce(Integer::sum).get();
        Integer validOrderCount=validOrderCountList.stream().reduce(Integer::sum).get();
        Double orderCompletionRate=0.0;
        if(totalOrderCount!=0){
            orderCompletionRate=validOrderCount.doubleValue()/totalOrderCount;
        }
        return OrderReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .orderCountList(StringUtils.join(orderCountList,","))
                .validOrderCountList(StringUtils.join(validOrderCountList,","))
                .totalOrderCount(totalOrderCount)
                .validOrderCount(validOrderCount)
                .orderCompletionRate(orderCompletionRate)
                .build();
    }
    /*
     * 根据条件查询订单数量
     * */
    private Integer getOrdersCount(LocalDateTime begin,LocalDateTime end,Integer status){
        Map map=new HashMap();
        map.put("begin",begin);
        map.put("end",end);
        map.put("status",status);
        return orderMapper.countByMap(map);
    }

    @Override
    //TODO 还没写完
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {
        LocalDateTime beginTime=LocalDateTime.of(begin, LocalTime.MIN);
        LocalDateTime endTime=LocalDateTime.of(end,LocalTime.MAX);
        List<GoodsSalesDTO>salesTop10=orderMapper.getSalesTop10(beginTime,endTime);
        List<String>names=salesTop10.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList());
        String nameList=StringUtils.join(names,",");
        List<Integer>numbers=salesTop10.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList());
        String numberList=StringUtils.join(numbers,",");
        return SalesTop10ReportVO
                .builder()
                .nameList(nameList)
                .numberList(numberList)
                .build();
    }


}
